{
 "layers": [
  {
   "layerId": 0,
   "layerName": "US_Aquifer_Principal",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Carbonate-rock aquifers",
     "url": "15d30346001e1a08399d0be37889a752",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASUlEQVQ4jWMJze9L/s7AY8BABcDJ8OUCy3cGHoMtjKk61DDQ5/9sBhZqGIQMRg0cNXDUwFEDRw2EGsjJ8OWCz//ZVDGMk+HLBQAInw7lWGw0/QAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Carbonate-rock aquifers"
     ]
    },
    {
     "label": "Igneous and metamorphic-rock aquifers",
     "url": "74d5025d84a342b5f0328c253ff4a98c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWNJ6mtL/svJYcBABcD8/ccFlr+cHAZ34j10qGGgysIdDCzUMAgZjBo4auCogaMGjhoINZD5+48LKgt3UMUw5u8/LgAAhLgRlaAkGaoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Igneous and metamorphic-rock aquifers"
     ]
    },
    {
     "label": "Sandstone and carbonate-rock aquifers",
     "url": "409506244c24c94adb87c4a80ac55451",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWPpaytM5mFnNGCgAvjy8/8FFh52RoNUN14dahg4e9dnBhZqGIQMRg0cNXDUwFEDRw2EGvjl5/8Ls3d9pophX37+vwAAE80TaV4K4YIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Sandstone and carbonate-rock aquifers"
     ]
    },
    {
     "label": "Sandstone aquifers",
     "url": "c38e0a4113b907786ce680c7a809776b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWNJ6exL/s3JbcBABcD6/esFlt+c3Ab3ghJ1qGGg0rr5DCzUMAgZjBo4auCogaMGjhoINZD1+9cLSuvmU8Uw1u9fLwAAqjURi8duzCoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Sandstone aquifers"
     ]
    },
    {
     "label": "Semiconsolidated sand aquifers",
     "url": "7ff50f5b20e3bb0e8e23b30661238858",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWOJrylL/svCasBABcD85/cFlr8srAZXteV1qGGg9tWHDCzUMAgZjBo4auCogaMGjhoINZD5z+8L2lcfUsUw5j+/LwAAbCsR3MFUmYIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Semiconsolidated sand aquifers"
     ]
    },
    {
     "label": "Unconsolidated sand and gravel aquifers",
     "url": "1be24f23dacd857fee35719c37ec6188",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWPpLAtN5mT9bsBABfD9N+cFFk7W7wYhslt0qGHgmsc+DCzUMAgZjBo4auCogaMGjhoINfD7b84Lax77UMWw7785LwAAfF8R2hSPzVQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Unconsolidated sand and gravel aquifers"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Aquifers of Alluvial or Glacial Origin (USGS)",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Unconsolidated sand and gravel aquifers",
     "url": "69e988fd45f33b68337d83e8aa029103",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWPpK0xK5mb8ZcBABfD1P9sFFm7GXwaJ3Dd0qGHg/K8aDCzUMAgZjBo4auCogaMGjhoINfDrf7YL879qUMWwr//ZLgAA1DMRx33bjtEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Unconsolidated sand and gravel aquifers"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}